The A3391/95 system is also one of the Performance Verification (PV) targets of the newly-launched German X-ray telescope on board the Spectrum-Roentgen-Gamma (SRG) mission, the extended ROentgen Survey with an Imaging Telescope Array (eROSITA). With large Field-of-View (FoV) of \(\sim \!1\)  degree in diameter, the scan-mode observation, and superior soft X-ray effective area (the effective area of the combined seven eROSITA Telescope Modules (TMs) is slightly higher than the one of XMM-Newton (MOS1+MOS2+pn) in the \(0.5-2.0\)  keV energy band) [1]}, [2]}, eROSITA allows us to capture the A3391/95 system beyond \(R_{100}\)  with a good spectral resolution.
